A MH without a 2nd vehicle is very restrictive. In our travels, we see those rental units in the campgrounds. By the time breakfast is over and everything put away, they don't hit the road before mid morning. Which means they will miss a great sunrise or sunset at a special place, or they arrive at the same time as all the tour buses arrive. Also a MH with a 2nd vehicle or a trailer/tow vehicle provides access to places the MH can't get to.
When traveling in very hot temps, the dash A/C in a MH will not keep the entire coach cool, which means running the on-board generator and impacting fuel consumption. On the other hand, if a trailer has an on-board generator, it can be started mid-point on the road in order to cool down the trailer.
